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cookie和session解决方法

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Release： 2016-06-13 10:48:04
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cookie和session
  setcookie("mm","gg");
  echo $_COOKIE["mm"];
?>

2个问题：

（1）
说如果没设置失效时间，则关闭浏览器就自动删除cookie，可我在chrome下关闭浏览器后，再打开还是可以输出gg?

（2）
说cookie设置后必须刷新一次才能生效。这是因为setcookie后，服务器将cookie发送给浏览器，再刷新一次的目的是浏览器将cookie送回。
那为什么session不需要重新刷新呢？毕竟sessionID保存在客户端不也是cookie得形式吗？难道不需要刷新传回sessionID方便服务器识别？

------解决方案--------------------

session是存在服务器上，不是存在客户端的

探讨
setcookie("mm","gg");
echo $_COOKIE["mm"];
?>

2个问题：

（1）
说如果没设置失效时间，则关闭浏览器就自动删除cookie，可我在chrome下关闭浏览器后，再打开还是可以输出gg?

（2）
说cookie设置后必须刷新一次才能生效。这是因为setcookie后，服务器将cookie发送给浏览器，……
Related labels：
cookie quot session setcookie
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